ML20214G622
| ML20214G622 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 06/13/1974 |
| From: | Tedesco R US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Deyoung R US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| CON-WNP-0066, CON-WNP-66, RTR-REGGD-01.007, RTR-REGGD-1.007 NUDOCS 8605220326 | |
| Download: ML20214G622 (2) | |
Text
- _ _
l
?
kb h
//usu3
~
p 13 874 Docket No. 50-397 E. C. DeYoung, Assistant Director for Light Water Reactors, Group 1. L WPPSS 2 - POST LOCA HYDROGEN CONTEL SYSTEM (TAR-946)
Plant Names WPPSS Nuclear Project No. 2 Dockat No.: 50-397 Licensing Stage: Post-CP Project Manager:
J. Orndoff Rsquested Completitm Date: June 21, 1974 Technical Review By: Containment Systems Br6nch bescription of Tack: Review of Hydrogen Control Systeme iteview Status: Cumplete I:1 tesponse to your technical assistance request of MAy 20, 1974., the Containment Systems Branch has reviewed the information provided by the applicant regarding the proposed systems for centrolling comoustible gas emcentrations in the containment fellewing a losa pf-coolant accident.
The applicant has proposed the use of redundant catalytic recoc.b1ners in conjunction with a containment inerting system, in accordance with the recommendations of Regulatory Guide 1.7.
Noe n t, it is pertfornt to note that the staff bas recently completed a reviire of the cut 1 rent guide ud we have proposed, in part, that several revf alone be made to the The' roposed, revised design paramaters specified by the gcide.
p Regulatory Guide 1.7 has been reviewed laternally by the staff and has been placed in the Public Locisment Soom. Currer.tly the proposed guide is under review by the ACRS Regulatory Guide Sth,coamatttee.
Since the contenglated revisions to the guide could significantly affect the de. sign of the WPPSS-2 combristibit: gas control syetens, we believe that further detailed review should be oef trted pending receipt of the PSAR.
The applicant should consider the proposed revisicca to the guide in the
- design of the combustible ses control system, and he should be advised of our comments, listed below, regarding the proposed system. If we find that a lenR delay in acdifying the guide is apparent, we vould than resume the review.
1.
The applicant should describe the syntes that will be provided to sample and measure the hydrogen concentration in the drywell sud wetwell atmospheres.
f.
8605220326 740613 PDR ADOCK 05000397 A
_____--_._._____-_-___A
e R. C. IhtYoung p 1 3 1974 2.
It is our position that operation of the containment spray systen in the poet IDCA period be made to promote mixing within each regien of the drywell and wetwell voltaes.
3.
The applicant should describe the previsions for both the preoperational and periodic testing of the combustible gas control system.
4.
Tha applicant should describe provisions for a backup purge i
subsystem, as is required by Regulatory Guide 1.7.
5.
The applicant han proposed the use of the Air Products and Chemicals, Inc. (APCI) catalytic recombiner system, which is being reviewed by CSB on a generic basis. The acceptability of the APCI recembiner system will depend on the results of this r
revity which is currently due to be completed by the fall of 1974.
Original sirned by:
Robert L Tedesco Robert L. Tedesco, Assistant Director for Containment Safety Directorate of Licensing cc:
A. Ciambusso W. Mcdonald J. Hendrie S. 11anaue r J. Clynn R. Klecker D. Eisenhut S. Varga J. Carter
?
G. Lainas J. Uradoff W. Butler C. Grimes L - Reading CS - Reading CSB - Reading Dacket File No. 50-397 omet u
....h!.93 B. g....
.pyCSB L:CS CGrimes: Imt 4 Lhinas RLTedesco suuAur >
JAL
.. 6/12/74 6/f)74 6/[p74 i
Form AEC.9it tR. 5 53) ALCM v240 cosa..shi Palmisms errscs 197t 443 506 9.s.
.